Car-truck.



W. S. ADAMS.

CAR TRUCK. APPLICATION man 1AN.2|. |915. 1,162,201.' Patented Nov. 30,1915. a sums-snm 1.'

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W. S. ADAMS.

CAR TnucK.

APPLICATION FLED IAN 2l,19l5. A

Patented Nov. 30,v 1915.

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WALTER S. ADAMS, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO THE J. G'.

BRILL C0., OF PHILADELPHIA, PENNSYLVANIA, A. CORPORATION 0F PENNSYL-VANIA.

CAR-TRUCK.

Specification of Letters Patent.

Patented Nov. 30, 1915.

Application led January 21, 1915. Serial No. 3,459.

To all whom t may concern.'

' Be it known that I, WALTER S. ADAMS, u citizen of the United States,and a resident of the city and county of Philadelphia and State ofPennsylvania, have invented certain new and useful Improvements in Car-Trucks, of which the following is a specification.

This invention relates to a bolster supporting means in car truckswherein the bolster is supported near each of its ends by a combinationof leaf and coil springs, this combination allowing the bolster to becarried true Without undue jar or vibration.

My invention also relates to bolster guides and dampers which eliminatethe necessity of using chafing plates between the truck bolsterand'truck transoms, the bolster being prevented from coming into contactwith the transoms by other means, and also prevent the excessive swingof the bolster, but not prevent it from moving from one position toanother as may be required by the conditions ofservice.

The present invention also resides in certain novel features ofconstruction and combination of elements, which Iwill be hereinafterdescribed and further pointed out in the claims appended hereto.

For a more particular description of my invention, reference is to behad to the ac companying drawings, in which- Figure 1 is a sideelevation of a truck pro vided with my improvements, the truck por tionsof the truck to which my invention has no relation being shown in dottedlines; Fig. 2 is an end elevation of a portion of a truck provided withmy improvements; Fig. 3 is a plan View of a portion of a truck providedwith my improvements; Fig. 4 is a sectional View of one of the pins andsurrounding parts for holding the bolster guide and dampers; Fig. 5 is asectionalview on the line 5-5 of Fig. 3, looking in the direction of thearrows; Fig. Gis a perspective view of the bracket secured to thebolster; and Fig. 7 i's a sectional view on the line 7-7 of Fig. 6,-

looking in the direction of the arrows.

I have indicated in a general waya truck of any-suitable type, (the samebeing shown in dotted linesthroughout the drawings) comprising wheels 1,equalizing bars 2 and a top chordIS. Secured to the top chord 3 aretransoms 4 and gusset plates 5. Mounted on one of the gusset plates. isa bracket 7 for this pin 12 is circular in cross section, the

square parts being at each end and eXtending from said squared parts arethreaded portions 13, upon one of which isa washer 14 and a nut 15 andon the. other, a coil spring 16, cap 17 and nut 18.

The spring arrangement upon which the truck bolster is mounted comprisesa lower set of leaf springs .19, and an upper set of leaf springs 20,each set of leaf springs comprising three, although any number may beused if desired. Each leaf spring is held together by a band 21. Mountedbetween the ends of the leaf springs are sets of coil springs, innersprings 22 and outerv springs 23, the springs 22 being nested within thesprings 23, there being four of these sets of coil springs to each setof leaf springs, that is, two at each end of the leaf springs. The `coilsprings are mounted in seats 24 and each of said seats have cylindricalprojections 25 and 26, the projections 25 moving within the projections26. Each of said seats also has a series of projections 27 on its outerside, these projections entering perforations 28 in the leaf springs 19and 20.

When a predetermined weight, or number of passengers is on the car, thecoil springs 19 and 20 compress suiiiciently to allow seats v 24 to movetoward one another, so that the upper ends of the projections 25 bearagainst the inner side of the upper seat and the lower end of theprojections 26 rest on the inner side of the lower seat, the seatsbeingl seated metal to metal, any additional load beingvcarried by theleaf springs. The coil spring seats 24 are also slightly beveled as at29 at their inner ends, so that when the coil springs are compressed andthe seats bear loo .movement of the bolster.

length of the leaf springs is lessened and they thus become stronger andtheir resistance to the weight of the load is increased.

Mounted on one of the gusset plates is a bracket 30 said bracket havinga perforated portion 31. Mounted on the bolster 9 is a racket 32 havinga cylindrical portion 33, said portion being strengthened by verticaland horizontal webs 34 and 35, and having a perforation 36 extendingthrough it, said perforation having a widened portion 37 at its center,Fitted within said perforation 36 and also within a perforation in thebracket 30 are pins 38 having widened portions 39, this portion on oneof said pins fitting within the widened portion 37 of the perforation36. Extending between these two pins is a link 40, said link beingperforated near its ends to allow the pins 38 to pass through and theinteriors of said portions are beveled or rounded as at 41. Theserounded parts 41 are preferably placed in bushings as shown in Fig. 4.Surrounding the narrowed portion 42 of the pin 38 is a cylindricalcollar 43 and surrounding said collar lis a coil spring 44. The damperdevice can, if desired, be used with the springs 44 omitted as thespring 16 also dampens the The outer end of the pins 38 is threaded forthe reception of a nut 45 and jam nut 46.

When the car is rounding a curve, the bolster swings transversely of thetruck. The beveled or rounded portion of the perforations in the link 40allows this link to move at an angle on the pins 38 asindicated indotted lines in Fig. 4, and also restricts the side swing of thebolster, this side swing being restricted by the amount of bevel in theperforations.. When this movement is taking place, the coil springs 44on the pins 38 are being compressed and act to dampen or resist themovement of the bolster. The link 40 also prevents the bolster fromcoming into contact with the transoms and obviates the neces/sity ofchaing plates.

It is obvious that my invention is not restricted to the\ embodimentshown, but is broad enough to cover all structures that come within thescope of the annexedclaims.

What I claim is:

1. In a car truck of the class described, a truck frame, a bolstermounted within said frame, means for supporting said bolster and a linkextending between. the bolster and transom for preventing the bolsterfrom coming into contact yvith'the transoms.

2. In a car truck of the class described, a

truck frame, transoms, a bolster mounted within said frame, means forsupporting said bolster and-,means extending between the bolster andtransoms and adapted to keep the bolster at a constant distance from thetransoms and means for limiting the end movement of the bolster andpreventing the` lame from coming into contact with the side ars.

3. In a car truck of the class described, a truck frame, a bolstermounted within said frame, leaf springs and coil springs mounted betweensaid leaf springs for supporting said bolster, a link extending betweenthe bolster and the truck transom.

4. In a truck of the class described, a truck frame, a bolster mountedwithin said frame, leaf springs and coil springs mounted between theends of said leaf springs for supporting the bolster, a pivot on thetruck transom, a pivot on the bolster and a link extending between saidpivots.

5. In a truck of the class described, a truck frame, a bolster mountedwithin said frame, leaf springs for supporting said bolster, springseats at the ends of said leaf springs, coil springs extending betweensaid spring seats, laterally extending pivots on the 4bolster and trucktransoms, a link extending between said pivots and means on said pivotsfor dampening the movement of the bolster.

6. In a truck of the class described, a truck frame, a bolster vmountedwithin said frame, bolster supporting means comprising leaf springs,spring seats on said leaf springs, coil springs extending between saidspring seats and means on said spring seats adapted to come into contactwhen a predetermined load is imposed upon the truck, any further loadbeing sustained by the leaf springs.

7 In a truck of the class described, a tru'ck frame, a bolster mountedwithin said frame, leaf springs for supporting said bolster, springseats at the ends of said leaf springs, coil springs mounted betweensaid spring seats, projections on said spring seats adapted to come intocontact when a predetermined load is imposed upon the truck, any furtherload being carried by the leaf springs.

8. In a truck of the class described, a truck frame, a bolster mountedwithin said frame, leaf springs/for supporting said bolster, springseats at the ends of said leaf springs, coil springs extending betweensaid spring seats and between the leaf springs, projections on saidspring seats one projection surrounded by the other and adapted to comeinto contact with the opposite spring seat.

9. In a truck of the class described, a truck frame, a bolster mountedwithin said frame, leaf springs for supporting said bolster, springseats on the ends of the leaf springs, coil springs mounted in saidspring seats and extending between the leaf springs, projections on saidspring seats, one of saidy projections surrounding the other projection,each of said projectlons bein adapted to come into contact with theopposlte spring seat when the coil springs are compressed.

10. In a truck of the class described, a truck frame, a bolster mountedwithin a frame, leaf springs for supporting said bolster, spring seatson the ends of said leaf springs, coil springsmounted between saidspring seats and between the. leaf springs,

cylindrical projections on said spring seats,v

one of said projections moving within the other, each of saidprojections adapted to contact with the opposite spring Seat when thecoil springs are compressed.

11. In a truck of the class described, a truck frame, a bolster mountedwithin said frame, means for supporting said bolster, a link extendingbetween the bolster and truck frame, said link preventing the bolsterfrom' coming into contact with the truck transoms and means adjacent tothe ends of said link and means on said bearings for imposing africtional resistance to sald lateral swing of the bolster.

13. In a truck of the class described, a truck frame, a bolster mountedwithin said frame, means for supporting said bolster, a bearing on thebolster, a bearing on the truck transom, a link extending between saidbearings, perforations in said link so formed as to allow a lateralmovement of the bolster and springs on the bearings for imposing africtional resistance to the lateral movement of the bolster.

14. In a truck of the class described, a

.i truck frame, a bolster mounted within said frame, means forsupporting said bolster, a bearing on the bolster, a bearing on one ofthe truck transoms, a link extending between the bearingsand preventingthe bolster from coming into contact with the transoms, perforations insaid link, said perforations being interiorly rounded to allow amovement of the link on said bearings and springs bearing against saidlink and imposing a 1f'rilftional resistance to the movement of said 15.Ina truck of the class described, a truck frame, a bolster mountedwithin said frame, means for supporting said bolster, a bracket onthebolster, a bracket on the truck frame, pins mounted on said brackets, alink extending between said pins and having perforations into which saidpins enter, said perforations being interiorly rounded to allow amovement of the link on said pins and springs on said pins for imposinga ,frictional resistance to the movement of said link.

16. In a truck of the class described, a truck frame, a bolster mountedwithin said frame, means for supporting said bolster, a bracket on thebolster, a bracket on the truck frame, perforations in said brackets,widened portions in said perforations, pins in said perforations,enlarged portions on said pins fitting the widened portions in theperforations, a link extending between said pins, perforations in saidlink through which said pins extend, said perforations being interiorlybeveled to allow a movement of said link on said pins and springs onsaid pins for frictionally resisting the movement of said link.

Signed at the city and county of Philadelphia, State of Pennsylvania,this 19th day of January, 1915.

WALTER S. ADAMS.

Witnesses:

HENRY C. EsLING, I-I. F. MCKILLIP.

